“retrospective study”的概念、定义、翻译、参考文献-科学参考

单词	retrospective study
释义	retrospective study Encyclopedia 理学临床试验的自适应性设计释 retrospective study观察性研究在自然状态下对研究对象的特征进行观察、记录，并对结果进行描述和对比分析的研究。 Mathematics retrospective study回溯研究
随便看	Social Science Citation Index social science information resources Social Sciences Academic Press (China) social search Social Security Act Social Security Act Amendments Social Security Act of the United States Social Security Code of Germany social security evaluation social security for the elderly social security fund budget Social security management project social security method Social Security Number social security right social security services social security statistics social security system social segregation social self social sensing social service social service agency valuation social service management informatization platform social service of geological data

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。